describe :process_fork, :shared => true do
  platform_is :windows do
    it "returns false from #respond_to?" do
      @object.respond_to?(:fork).should be_false
    end

    it "raises a NotImplementedError when called" do
      lambda { @object.fork }.should raise_error(NotImplementedError)
    end
  end

  platform_is_not :windows do
    not_supported_on :jruby do
      before :each do
        @file = tmp('i_exist')
        rm_r @file
      end

      after :each do
        rm_r @file
      end

      it "returns status zero" do
        pid = Process.fork { exit! 0 }
        _, result = Process.wait2(pid)
        result.exitstatus.should == 0
      end

      it "returns status zero" do
        pid = Process.fork { exit 0 }
        _, result = Process.wait2(pid)
        result.exitstatus.should == 0
      end

      it "returns status zero" do
        pid = Process.fork {}
        _, result = Process.wait2(pid)
        result.exitstatus.should == 0
      end

      it "returns status non-zero" do
        pid = Process.fork { exit! 42 }
        _, result = Process.wait2(pid)
        result.exitstatus.should == 42
      end

      it "returns status non-zero" do
        pid = Process.fork { exit 42 }
        _, result = Process.wait2(pid)
        result.exitstatus.should == 42
      end

      it "returns nil for the child process" do
        child_id = @object.fork
        if child_id == nil
          touch(@file) { |f| f.write 'rubinius' }
          Process.exit!
        else
          Process.waitpid(child_id)
        end
        File.exist?(@file).should == true
      end

      it "runs a block in a child process" do
        pid = @object.fork {
          touch(@file) { |f| f.write 'rubinius' }
          Process.exit!
        }
        Process.waitpid(pid)
        File.exist?(@file).should == true
      end

      it "marks threads from the parent as killed" do
        t = Thread.new { sleep }
        pid = @object.fork {
          touch(@file) do |f|
            f.write Thread.current.alive?
            f.write t.alive?
          end
          Process.exit!
        }
        Process.waitpid(pid)
        t.kill
        t.join
        File.read(@file).should == "truefalse"
      end
    end
  end
end
